Chusetts



(No Model.)

B. HUBER & W. K. HODGMAN.

INKING APPARATUS FOR PRINTING MACHINES.

No. 368,339. i Patented Aug. 16, 1887.

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UNITED STATES PATENT OFFICE.,

BERTHOLD HUBER AND VILLIS K. HODGMAN, OF TAUNTON, MASSA- CHUSETTS.

INKING APPARATUS FOR PRINTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 368,339, dated August 16, 188'7.

Application filed September 2, 1886. Serial No. 212,561. (No model.)

To all whom it may concern:

Be it known that we, BEnrHoLD HUBER and W'ILLIs K. HODGMAN, both of the city of Taunton, in the county of Bristol and State of Massachusetts, have invented certain Improvements in Inking Apparatus for Printing-Machines, of which the following is a specification.

Our invention relates to that class of printing-presses known as the bed-and-cylinder press,77 in which the form reciprocates under the impression-cylinder.

The form is supplied with ink before each impression by means of form-rollers, one or more of which (termed a set) are arranged on one side of the impression-cylinder, so that the form as it reciprocates will pass back and forth under the saine in contact therewith. As the rollers receive a fresh supply of ink for each impression, it is evident that the end of the form which first comes in contact therewith will take therefrom the greatest quantity of ink, and that the rollers will deposit less and less ink as they approach the opposite end of the form, whereby the latter is unevenly inked.

rI he object of our invention is to remedy this defect and obtain a more equal distribution of the ink upon the form.

To this end our invention consists in the combinations of mechanism hereinafter more particularly set forth and claimed.

Figure 1 is an elevation of a printing-press embodying our invention. Fig. 2 is a vertical section of the same. Fig. 3 shows position of the movable set of form-rollers when raised clear of the form.

Similar letters refer to similar parts throughout the several views.

The side frames, A, together with the crossstays A', constitute the principal frame-work of the machine.

The impression-cylinder C makes two turns during one complete stroke of the bed, which latter carries the form B. The movement of the impression-cylinder and bed is similar to any two-revolution press, and motion can be given to them in any well-known manner. The two form-rollers R, together with their rider or distributor roller D, constitute one set, the form-rollers R being driven by friction with the rider-roller D, which is driven by a spurgear on one end, which meshes with the intermediate gear, The intermediate gear, G5, is driven by a second intermediate gear, (shown in dotted 1ines,) which meshes with a third intermediategea1,(shown in dotted lines,) which latter is driven by the form-roller drivinggear G, which is fastened to one end of the shaft S3 outside of the side frame, A. Motion is given to the shaft S3 by means of the pulley P, secured thereon just inside of the side frame, A. rIlhe driving-belt P2 passes over the pulley P, and also over the loose pulley P', which runs on the stud S, the ends being fastened to the bed. rIhe two form -rollers R', together with their rider-roller D', constitute a set. The said rollers R' D are journaled in the two roller stands C, and are driven by the same means employed to drive the form-rollers R andthe rider-roller D. The two roller-stands C rest on the side frames, A, and are fulcrumed on the stay-rod S2, which is secured between the two fly-stands F`-. The free ends of the two roller-stands C admit of being raised enough to clear the form-rollers It' from the form B as it comes from beneath the impression-cylinder C, but not sufficiently to disconnect the gear on the end of the riderroller D from the intermediate gear, G5. The free ends of the rollerstands CG are raised and lowered at the proper time by the trip-cam C', which is secured to the shaft S.

Motion is transmitted to the roller-stands C by means of the cam-roller R2, connecting-rod C2, lever C3, shaft S', two levers, C, and two connecting-rods, C". The camshaft S is caused to rotate by the train of spur-gears, which are driven by the cylinder-gear G, consisting of the gears G' G, a pinion on the hub of G2, (not showin) and G".

The feed-board and fly are lettered, respectively, F and F.

Ink is supplied to the ink-table I from the fountain-roller I3 by means of the usual duetor-roller I, and is distributed thereon by the rollers I.

In Figs. 1 and 2 we have shown the press about to make an impression, and the bed is on its forward or printing stroke.

In the positions shown in Figs. 1 and 2 the end of the formB nearest the impression-cyl- IOO ing the operation and effect of the set of roll` ers composed of the two form-rollers B and their riderroller D", which, by means of the mechanism described, are lowered into con'- tact with the form B during the printing or forward stroke of the bed, and raised out of contact with said form B While the latter is.

passing under the form-rollers R during the back-stroke of the bed. The set of rollers composed of the two form-rollers R and their rider-roller D always retain the same relative position to the surface of the form B', and therefore come in contact therewith during both strokes of the bed. As the bed reciprocates forward and back the form B is rolled from both directions by the two form-rollers R, the most ink, however, being applied to its tail end, which comes in contact with the rollers B just after they have left the ink-table I, and are therefore freshly charged with ink. The two form-rollers R', by not coming in contact with the form B during the back-stroke of the bed, apply the most ink, commencing at the head end of the form, thus equalizing and improving the distribution `of ink over the entire form. In Fig. 3 we have shown the position of the movable set of ro lers'when raised clear of the form B during the backstroke of the bed.

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. An impressioneylinder, a reciprocating form-carrier, and two sets of form-rollers with their rider-rollers, the said rider-rollers having each a gear-pinion fixed thereto, one set of form-rollers and rider-roller journaled in fixed bearings andthe other set journaled in movable bearings,combined with a gear-wheel, as g5, suitably supported in fixed position and positively driven through immediate connecting mechanism by the motor which reciprocates the form-carrier, the said gear-wheel being arranged intermediate of the rider-rollers and continuously meshing with the gear-pinions on said rider-rollers, and mechanism, substantially as described, to raise or elevate the set of rollers which are journaled in the movable bearings during the back-stroke of the reciprocating bed or form-carrier, as and for the purpose set forth.

2. The pivoted roller-stands C", with the rollers B. R D journaled in the free end thereof, the roller D' having a pinion fixed thereto, which continuously meshes with the fixed positively-driven gear-wheel G5, combined with said gear-Wheel G, the cam-roller R2, connecting-rod C2, levers C3 C4, shaft S', rods C5, and rotating cam-shaft S, and the form, inking-table, and set of fixed form-rollers and its rider-roller, substantially as set fort-h.

3. The set of form and rider rollers journaled in fixed bearings, and a roller stand or bracket pivoted at one end and provided at its other end with a set of form and rider rollers journaled therein, substantially as specified, combined with means, substantially as described, to raise or elevate the said rollerstand on its pivot, and with a positively-driven gear-wheel intermediate of the rider-rollers of the two sets of rollers and continuously meshing with pinions secured to said riderrollers, as and for the purpose set forth.

BEBTHOLD HUBER. WILLS HODGMAN.

Witnesses: EDWARD P. COLEMAN,

E. L. ORossMAN. 

